CN117222492A - Electrode for connecting with the emitter head (plug) of a plasma torch by increasing the area of the cooling surface - Google Patents
Electrode for connecting with the emitter head (plug) of a plasma torch by increasing the area of the cooling surface Download PDFInfo
- Publication number
- CN117222492A CN117222492A CN202280029666.2A CN202280029666A CN117222492A CN 117222492 A CN117222492 A CN 117222492A CN 202280029666 A CN202280029666 A CN 202280029666A CN 117222492 A CN117222492 A CN 117222492A
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- Prior art keywords
- header
- copper electrode
- emission
- plasma torch
- cooling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 51
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 93
- 239000010949 copper Substances 0.000 claims abstract description 93
- 229910052802 copper Inorganic materials 0.000 claims abstract description 92
- 238000005520 cutting process Methods 0.000 claims abstract description 61
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 229910052751 metal Inorganic materials 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims abstract description 7
- 230000008020 evaporation Effects 0.000 claims description 6
- 238000001704 evaporation Methods 0.000 claims description 6
- 229910052735 hafnium Inorganic materials 0.000 claims description 5
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 claims description 5
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 239000010937 tungsten Substances 0.000 claims description 3
- 229910052726 zirconium Inorganic materials 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 230000001419 dependent effect Effects 0.000 claims 1
- 239000000428 dust Substances 0.000 claims 1
- 238000010304 firing Methods 0.000 description 9
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 8
- 229910052709 silver Inorganic materials 0.000 description 8
- 239000004332 silver Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 230000002035 prolonged effect Effects 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 229910001316 Ag alloy Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 238000005488 sandblasting Methods 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000003416 augmentation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- YCKOAAUKSGOOJH-UHFFFAOYSA-N copper silver Chemical compound [Cu].[Ag].[Ag] YCKOAAUKSGOOJH-UHFFFAOYSA-N 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K10/00—Welding or cutting by means of a plasma
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K10/00—Welding or cutting by means of a plasma
- B23K10/006—Control circuits therefor
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/26—Plasma torches
- H05H1/28—Cooling arrangements
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/26—Plasma torches
- H05H1/32—Plasma torches using an arc
- H05H1/34—Details, e.g. electrodes, nozzles
- H05H1/3436—Hollow cathodes with internal coolant flow
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/26—Plasma torches
- H05H1/32—Plasma torches using an arc
- H05H1/34—Details, e.g. electrodes, nozzles
- H05H1/3442—Cathodes with inserted tip
Abstract
The invention relates to a copper electrode of a plasma cutting torch, which is used for connecting an emission cutting head of the plasma cutting torch with the copper electrode and prolonging the service life and the efficiency of the plasma cutting torch along with the increase of the surface of a cooling surface. It comprises a transmitting header having a surface enlarging channel (3 a) formed by forming depressions/projections on a side surface and a surface enlarging channel (3 b) formed by forming depressions/projections on an upper surface, the diameter of the transmitting header being gradually increased in a bowl shape from an outer diameter to a tip; and the emission header (3) is fixed by a downstream electrode body (2) carrying the emission header (3) with a cavity (4), wherein by fastening the emission header (3) on the cavity (4) on the copper electrode body (2), a copper electrode with a liquid cooling system in a plasma torch is formed to cut the metal sheet.
Description
Technical Field
The invention relates to a copper electrode of a plasma cutting torch, which is used for connecting an emission cutting head (plug) of the plasma cutting torch with the copper electrode and prolonging the service life and the efficiency of the copper electrode along with the increase of the surface of a cooling surface.
Background
For plasma torches with automatic or manual liquid or gas cooling systems, arc plasma torches are based on similar constructions, which are equipped with an electrode consisting of a body of an emitting torch, a gas diffuser and a nozzle for fixing the plasma jet.
Generally, copper electrodes used in these plasma torches are composed of an integral copper tube, and an electron-emitting torch (also referred to as an emission torch) is fixed therein. The header is typically made of tungsten, hafnium or zirconium. Such a firing header is generally cylindrical and is secured by stamping, bayonet or hard insertion into a blind bore (i.e., a cavity in which the firing header is secured) at the downstream end of the electrode body.
Coolant from the immersed tube connected to the plasma torch through the circulation system drain line and the center of the torch connected to the inner tube of the torch is transported by the immersed tube to the vicinity of the bottom of the blind hole of the copper electrode by various connection means; and the plasma cutting torch is returned to the cooling system through a cooling liquid circulation reflux line, wherein a reflux pipeline in the plasma cutting torch is arranged in an upward direction between the outside of the electrode blind hole and the outer diameter of the immersed pipeline for cooling and cleaning. All liquid cooled plasma torches now and in the past use similar structures, a technique known to companies producing copper electrodes.
It is well known that during plasma cutting, the emitter head (plug) is exposed to the extremely high temperatures and suction forces created by the arc plasma jet, which effect causes the arc plasma jet to start growing on the emitter head. Inevitably, the metal or metal alloy that makes up the emission header evaporates significantly, is projected into the plasma jet, and thus forms pits inside the emission header causing it to wear.
With the electrode head of a plasma torch of a copper electrode, rapid deterioration is almost inevitably caused by such wear, which is indeed a real problem on an industrial scale. Because it requires frequent replacement of the torch electrode, which also affects the efficiency of the cutting process, replacement of the electrode can stop the system from running, interrupt the cutting process, and create additional expense. Therefore, when the emission header fails, only the emission header cannot be replaced, but the entire electrode needs to be replaced together.
When the thermal conductivity coefficient of the additional material, such as the material formed by the copper electrode body, is very low, for example copper and hafnium. To achieve the highest purity values possible, the thermal conductivity of hafnium is close to 5.75% compared to that of copper, thus preventing high temperature heat transfer and better cooling due to the very high temperatures created by the arc plasma jet generation and the low thermal conductivity of the plug material. These additional materials may be used in the firing header to provide better insulation and cooling performance.
Disclosure of Invention
The present invention is directed to minimizing the above-mentioned drawbacks and finding a solution to this problem.
Electrodes made using silver and/or silver/copper and/or copper silver alloys have a slightly longer life than electrodes made using copper due to the higher thermal and electrical conductivity of silver compared to copper. However, the cost of silver is much higher than copper, which adds significantly to the cost of the electrode. By adding channels on the surface of the invention, the cutting electrode with the service life prolonged by two times or more can be made into a substitute, and the electrode body is made of copper, so that the cost of the electrode is reduced.
For this purpose, recess/projection forming surfaces are increased on an upward cylindrical outer surface of an electrode tip portion fixed to a lower tip portion of a copper electrode body of the emission header at equal intervals in parallel with each other; the emission header, which is exposed to high temperature from the pole at the beginning of the cutting process, is cooled as the heat transfer surface required for cooling from the body to which the pole is fixed increases, thereby ensuring that the emission header can be better cooled when exposed to high temperature, reducing evaporation due to high temperature, and thus extending the working life.
To this end, as the surface increases from the copper electrode tip portion of the firing header, which is fixed to the lower tip portion of the copper electrode, to the upwardly oriented bowl and cylindrical outer surface, from the tip portion to the end of the cylindrical upper tip of the header in the upward direction, consisting of identical profile portions parallel to each other, with equidistant depressions/projections, the heat transfer surface increases by more than 80%; and, from the outer diameter to the center, having the same profile cross section in parallel, shrinking toward the center at equal intervals, increasing the heat transfer surface area by more than 80%; the emission header exposed to high temperatures during operation is better cooled, reducing mass loss due to evaporation and phase change due to high temperatures, and thus extending the working life.
Drawings
FIG. 1 is a cross-sectional view of a copper electrode of a plasma torch with a liquid cooling system, with surface augmentation achieved by joining the emitter header and the cooling surface of the copper electrode body;
fig. 2A is a sectional view of a surface-added state of a cooling surface connecting an emission header to a copper electrode body through recesses/protrusions;
FIG. 3A is a top cross-sectional view of a surface addition of a cooling surface connecting an emitter header to a copper electrode body by way of recesses/protrusions;
FIG. 4a is a cross-sectional view of a root wear value of 1.9mm, measured from the center of the weld, in a transmitting header consisting of an arc plasma jet of the transmitting header, the area of the transmitting header being increased by a recess/projection attached to the cooled surface of the copper electrode body;
fig. 4b is a cross-sectional view of a root wear value of 2.38 mm, measured from the center of the weld, in a transmitting header consisting of an arc plasma jet of the transmitting header, the area of the transmitting header being increased by a recess/projection connected to the cooling surface of the copper electrode body.
Reference numerals of the invention
1. Cutting a copper electrode of a metal sheet in a plasma cutting torch by using a liquid cooling system;
2. a downstream copper electrode body with an emission header;
3. transmitting a cutting head;
3a. A surface enlarging channel having depressions/projections formed on a side surface thereof;
3b. A surface enlarging channel formed with depressions/projections on an upper surface thereof;
3c. A diameter that expands in a bowl shape from the outer diameter to the tip;
4. a chamber in which the firing header is secured to the copper electrode body;
5. a coolant immersed tube;
A. bowl depth.
Detailed Description
The invention relates to a copper electrode of a plasma cutting torch, which is used for connecting an emission cutting head of the plasma cutting torch with a copper electrode body, and prolonging the service life and the efficiency of the copper electrode by increasing the surface area of a cooling surface. Wherein it comprises an emission header having a surface enlarging channel (3 a) with depressions/projections formed on a side surface thereof and a surface enlarging channel (3 b) with depressions/projections formed on an upper surface thereof and having a bowl-shaped enlarged diameter from an outer diameter to a tip end, and the emission header (3) is carried by a downstream electrode body (2), the emission header (3) being fixed to the electrode body (2) having a chamber (4) (fig. 1).
And (3) drilling upwards from the upper edge of the depth (A) of the bowl-shaped part (3 c) of the cavity (4) until the cavity (4) reaches the driving length of the emission cutting head (3). The transmitting header is fixed in the chamber, and the fixed value of the transmitting header is lower than the small diameter of the threads of the cooling channel (3 a) on the cylindrical side of the transmitting header. In the form of a bowl (3 c) extending from the upper edge of the depth (A) of the bowl (3 c) to the tip of the electrode (1), a low-level treatment is carried out in the copper electrode (1), the emitter head being fixed in the chamber (4) with a slightly different shape from the one below. During the vacuum driving process in the chamber (4) holding them, cooling channel recesses/projections (3 a) of bowl-shaped diameter (3 c) of the copper body emitting header (3) are formed and held.
The invention relates to a copper electrode of a plasma cutting torch, which is used for connecting an emission cutting head and a copper electrode body, and prolonging the service life and the efficiency of the copper electrode by increasing the area of a cooling surface. As shown in fig. 2, the arc formed by the attraction force generated by the arc plasma jet exposed during operation of the copper electrode (1), and the emission header (3) formed by tungsten, hafnium or zirconium performing the metal cutting process, have surface enlarging channels (3 a,3 b), and recesses/projections are formed in the side surfaces and upper surfaces of the surface enlarging channels (3 a,3 b) to perform better cooling during operation thereof (fig. 2, 3). The copper electrode with a liquid cooling system in a plasma torch is formed by cutting a metal sheet (fig. 1) by fixing an emission header (3) on a chamber (4) on a copper electrode body (2), on which surface addition channels (3 a,3 b) for cooling purposes are formed, which are formed on side surfaces and an upper surface.
In the case of the same shape, a 260 amp liquid cooled copper electrode was used, and system catalog cutting parameters were employed, and when a 25 mm thick A1 grade soft iron plate was cut, the copper electrode was removed by 1184 times of sand blasting, measured from the center of the arc pit, the root abrasion depth on the emission header (3) by the arc plasma jet was determined to be 1.9mm, and the measurement was performed from the position at the tip of the electrode.
The root wear depth of the arc plasma jet formed at the electrode tip of the firing header (3) was calculated to be 2.38 mm with the reconnection of the copper electrodes, using the same shape system catalog cutting parameters, continuing the cutting and performing 648 sand blasting.
The difference in these two values (2.38-1.9) indicates that 648 shots achieved a wear depth of 0.48 mm.
From these values, when the copper electrode reached a depth of 1.9mm from the first cutting point, 2565 shots were obtained if cutting was performed in a linear decrease, whereas 1184 shots were obtained due to the loss of depth at 1.9mm due to excessive evaporation.
This shows that the rate of evaporation and mass loss decreases logarithmically as the liquid cooling zone is approached, as better cooling is provided in this process. In this case, cooling is very important, and the surface area is increased by 80% by the surface-enlarging channels (3 a,3 b) formed at the depressions/projections of the side and upper surfaces of the emission header (3). This channel corresponds to the pole that secures the emission header (3) to the copper electrode body and starts cutting from the emission header (3), an increase of about 80% in surface is achieved on the securing surface during the securing process by the recess/projection connection to the copper electrode body (2), and the life of the emission header (3) is prolonged with an increase of the cooling transmission (see fig. 1).
By blasting and cutting using a liquid cooling system with pits formed by an arc plasma jet, rooting is started from the first starting level of cutting by the firing header (3), using 260 amp electrodes, and using a class A1 mild steel plate material with a thickness of 25 mm, a hemispherical or hemispherical pit bottom is formed at a wear measurement 1.9mm from the pit bottom center according to the measurement result, and the pit edge diameter is about 1.84 mm. The diameter measured 0.4 mm from the tip of the copper electrode was about 1.9 mm. In these two diameter differences, a conical wear of about 1 degree was observed at a depth distance of 1.9mm to 1.84 mm. In the wear of the firing header (3), in the region from the tip of 0.4 mm after depth to the tip of the copper electrode, a wear of 1.9mm diameter which expands outwards into a bowl-like shape occurs (fig. 5 a). This wear of the copper electrode body (2) occurs after a certain amount of work is done on all the cutting electrodes of different diameters according to the current, and these wear are all furthest from cooling. This wear of the copper electrode body (2) furthest from cooling occurs after a certain amount of work has been done on all cutting electrodes with different diameters, depending on the current level.
Thus, by adding a diameter at the bowl-shaped tip to the emitter cutting head (3) to form a profile (fig. 4a, 4 b), the diameter can be opened up in terms of amperage and depth tolerance of the recess/protrusion at the bowl depth (a).
At the bowl-shaped depth (A) of the emitting header (3), from the outer diameter of the emitting header (3) to the upper surface of the emitting header, in a straight line or conical shape at about 1-2 degrees relative to the bottom-up centerline (FIG. 4a, FIG. 4 b)
At the bowl depth (a) position of the emitting header (3), the diameter of the emitting header (3) increases in proportion to the depth of the recesses/projections (fig. 4a, 4 b), which are equally spaced from the outer diameter of the emitting header (3) to the flat or conical end of the emitting header (3) in the upward direction.
Any number of depressions/projections may be formed according to the diameter of the emitting header (3) calculated from the maximum cutting current, with any suitable geometric profile cross-section to produce the maximum cooling surface increase, and with any suitable geometric extension. The depressions/projections may be formed on the surface of the emitting header (3) in a suitable CNC machine with precise tolerances, which has a precision knurling system, and with a profiling cutter on the upper surface of the emitting header (3) (fig. 2, 3).
Depending on the geometric cross-section of the channels (3 a,3 b) opened by the knurling, the number of channels, the depth to which they are to be driven and the amount of sawdust to be scraped and cleaned during driving, there is left a suitable clearance where the tip is driven into and fixed to the body of the copper electrode.
The current method of using the firing header (3) on the copper electrode body (2) is to drive it by drawing a vacuum, even if other methods exist. Line vacuum is the fastest and lowest cost method.
The electrode life of the invention is prolonged in copper electrodes (1) used in cutting torches with liquid cooling systems and copper electrodes used in cutting torches with air-cooled mechanical systems.
The fact that the recesses/projections of the emission header (3) are low-cost in terms of the manufacturing process time provides further advantages compared to electrodes with extended life.
In the plasma cutting, the problems of angle cutting and burr cutting exist in the metal cutting process of the copper electrode; when the copper electrode starts to be cut, the cutting quality and the cutting angle are low; no or little burrs on the lower cutting face of the cutting surface; these negative conditions increase at the end of the lifetime of the copper electrode, as the top of the electrode (1) being produced gradually melts into a bowl-like shape and the cutting gap gradually increases. The invention achieves a better cooling effect by cooling the area increasing channels (3 a,3 b), which increases the life of the copper electrode (1) by two times or more. The gradual melting of the bowl-shaped portion at a lower level and for a longer time further reduces these problems, resulting in a higher quality cut. In case of excessive bowl expansion, the cutting operator has to slow down the cutting speed, which means that the cutting time is longer and the cutting cost increases.
The high thermal and electrical conductivity of silver compared to copper electrodes gives electrodes made of silver or silver/copper and copper/silver alloys a somewhat longer lifetime, in particular at high currents. However, the cost of silver is much higher than copper, which adds significantly to the cost of the electrode. By the cooling area increasing channels (3 a,3 b) in the invention, the service life of the copper cutting electrode (1) is prolonged by two times or more, a substitute for the copper cutting electrode is created, and the cost of the copper electrode is reduced.
For many years manufacturers have known that the emission header (3) used in plasma cutting copper electrodes generally comprises a cylindrical or other geometry (e.g. conical) and similar geometries. However, such a structure forming the idea according to the present invention is not seen in any company. This is due to the heat transfer surface increasing channels (3 a) which extend parallel to the bowl (3 c) and/or at the same angle to the bowl, consist of the same profile section, providing the greatest surface increase by means of equally spaced open depressions/protrusions; the surface enlarging channels (3 b) with highest heat transfer, extending parallel to the outer diameter of the upper part of the emitting header (3), consist of the same profile cross section and converge towards the centre at equidistant intervals. The invention provides a geometry that allows to reduce the mass lost due to phase-change evaporation and to extend the lifetime of the copper electrode (1).
Claims (9)
1. A plasma torch copper electrode connecting a transmitting header of a plasma torch with the copper electrode and extending its lifetime and efficiency as the surface of a cooling surface increases, characterized by comprising a transmitting header having a surface enlarging channel (3 a) formed by forming a recess/projection in a side surface and a surface enlarging channel (3 b) formed by forming a recess/projection in an upper surface, the diameter of the transmitting header being increased gradually in a bowl shape from an outer diameter to a tip, and the transmitting header (3) being fixed by a downstream electrode body (2) carrying the transmitting header (3) having a chamber (4).
2. The plasma torch copper electrode connecting the emission header and copper electrode of the plasma torch according to claim 1, and extending its lifetime and efficiency with an increase in the surface of the cooling surface, characterized in that the arc formed by the attraction force generated by the exposure to the arc plasma jet during operation of the copper electrode (1), and the emission header (3) formed by tungsten, hafnium or zirconium performing the metal cutting process have surface enlarging channels (3 a) and surface enlarging channels (3 b), the surface enlarging channels (3 a) forming depressions/protrusions on the side surface, the surface enlarging channels (3 b) forming depressions/protrusions on the upper surface to ensure a better cooling effect, so that in operation it can be used for a longer time under high heat exposure without being rapidly melted.
3. A plasma torch copper electrode connecting the emitter cutting head of the plasma torch with the copper electrode and extending its lifetime and efficiency with increasing surface of the cooling surface according to claim 1 or 2, characterized in that the diameter at the bowl tip is profiled by adding to the emitter cutting head (3) during the manufacturing of the emitter cutting head (3), said diameter being set according to ampere and depth tolerance of the recess/protrusion at the bowl depth (a).
4. The plasma torch copper electrode connecting the emission header of the plasma torch with the copper electrode and extending its lifetime and efficiency with increasing surface of the cooling surface according to any of the preceding claims, characterized by having an emission header (3), the emission header (3) having an increased diameter (3 c) proportional to the depth of the recess/protrusion, said increased diameter (3 c) being equally distributed from the outer diameter of the emission header (3) at the bowl depth (a) to the flat or tapered end of the emission header (3) in the upward direction.
5. The plasma torch copper electrode connecting the emission header of the plasma torch with the copper electrode and extending its lifetime and efficiency with increasing surface of the cooling surface according to any of the preceding claims, characterized in that the emission header (3) has a chamber (4) fixed to the copper electrode body, the clearance of which is dependent on the geometrical cross section of the channels (3 a,3 b) opened by knurling, the number of channels, the depth to which they are to be driven and the amount of saw dust to be scraped and cleaned during driving.
6. The plasma torch copper electrode connecting the emission header and copper electrode of the plasma torch and extending its lifetime and efficiency with increasing surface of the cooling surface according to any of the preceding claims, characterized in that the copper electrode in a torch with a liquid cooling system and the copper electrode of a torch for an air cooled mechanical system have an emission header (3) extending its lifetime.
7. The plasma torch copper electrode connecting the emission header of the plasma torch with the copper electrode and extending its lifetime and efficiency with increasing surface of the cooling surface according to any of the preceding claims, characterized by having surface enlarging channels (3 a,3 b) which are formed with recesses/protrusions on their side and upper surfaces and on the side and lower surfaces of the (plug) emitter bit (3), and by increasing the lifetime of the emission header (3) by the diameter (3 c) of the emission header which will expand in bowl-like fashion from the outer diameter to the tip.
8. The plasma torch copper electrode connecting the emission header of the plasma torch with the copper electrode and extending its lifetime and efficiency with increasing surface of the cooling surface according to any of the preceding claims, characterized by having an emission header (3), the emission header (3) having any number of recesses/protrusions formed according to the diameter (3 c) of the emission header (3) calculated from the maximum cutting current, having any suitable geometrical profile cross section to create the maximum cooling surface increase, and having any suitable geometrical extension.
9. The plasma torch copper electrode connecting the emission header of the plasma torch with the copper electrode and extending its lifetime and efficiency with an increase in the surface of the cooling surface, characterized by a cooling area increasing channel (3 a,3 b) formed by recesses/protrusions on the side and upper surfaces of the emission header (3) fixed to the chamber (4), the emission header fixing the copper electrode body in the chamber (4), the surface of the emission header (3) increasing from the furthest point where the emission header (3) starts cutting, resulting in more cooling due to this increase in cooling surface, thus reducing evaporation and extending the service life.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TR2021/006962 TR2021006962A2 (en) | 2021-04-21 | ELECTRODE FOR PLASMA CUTTING TORCHES MADE BY SURFACE INCREASE OF THE SURFACES OF THE SPREADER CUTTER (CUT) IT IS CONNECTED TO THE ELECTRODE BODY | |
| TR2021006962 | 2021-04-21 | ||
| PCT/TR2022/050304 WO2022225490A1 (en) | 2021-04-21 | 2022-04-06 | Electrode made by surface increase of cooling surfaces connecting emitter cutter tip (insert) for plasma cutting torches with copper electrode body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117222492A true CN117222492A (en) | 2023-12-12 |
Family
ID=88292786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202280029666.2A Pending CN117222492A (en) | 2021-04-21 | 2022-04-06 | Electrode for connecting with the emitter head (plug) of a plasma torch by increasing the area of the cooling surface |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JP2024515345A (en) |
| KR (1) | KR20230172501A (en) |
| CN (1) | CN117222492A (en) |
| AU (1) | AU2022260604A1 (en) |
| BR (1) | BR112023021907A2 (en) |
| CA (1) | CA3214730A1 (en) |
| GB (1) | GB2620721A (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8633417B2 (en) * | 2010-12-01 | 2014-01-21 | The Esab Group, Inc. | Electrode for plasma torch with novel assembly method and enhanced heat transfer |
| US9686848B2 (en) * | 2014-09-25 | 2017-06-20 | Lincoln Global, Inc. | Plasma cutting torch, nozzle and shield cap |
| DE102017112821A1 (en) * | 2017-06-12 | 2018-12-13 | Kjellberg-Stiftung | Electrodes for gas- and liquid-cooled plasma torches, arrangement of an electrode and a cooling tube, gas guide, plasma torch, method for guiding gas in a plasma torch and method for operating a plasma torch |
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2022
- 2022-04-06 AU AU2022260604A patent/AU2022260604A1/en active Pending
- 2022-04-06 KR KR1020237036786A patent/KR20230172501A/en unknown
- 2022-04-06 CA CA3214730A patent/CA3214730A1/en active Pending
- 2022-04-06 GB GB2316748.9A patent/GB2620721A/en active Pending
- 2022-04-06 CN CN202280029666.2A patent/CN117222492A/en active Pending
- 2022-04-06 BR BR112023021907A patent/BR112023021907A2/en unknown
- 2022-04-06 JP JP2023564401A patent/JP2024515345A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CA3214730A1 (en) | 2022-10-27 |
| GB2620721A (en) | 2024-01-17 |
| AU2022260604A1 (en) | 2023-10-26 |
| BR112023021907A2 (en) | 2023-12-19 |
| JP2024515345A (en) | 2024-04-09 |
| KR20230172501A (en) | 2023-12-22 |
| GB202316748D0 (en) | 2023-12-13 |
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